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首页> 外文期刊>Chinese Journal of Electronics >A Video Watermarking DRM Method Based on H.264 Compressed Domain with Low Bit-Rate Increasement
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A Video Watermarking DRM Method Based on H.264 Compressed Domain with Low Bit-Rate Increasement

机译：基于低比特率增加的H.264压缩域的视频水印DRM方法

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摘要

It gets more and more important for video copyright protection, it is necessary to provide efficient H.264 compression domain watermarking for video Digital rights management(DRM). A new watermarking method based on H.264 compressed domain is proposed for video DRM, in which the embedding and extracting procedure are performed using the syntactic elements of the compressed bit stream. In this way, complete decoding is unnecessary in both embedding and extracting processes. Based on the analysis of the time and space, some appropriate sub-blocks are selected for embedding watermarks, increasing watermark robustness while reducing the declination of the visual quality. In order to avoid bit-rate increasing and strengthen the security of the proposed video watermarking scheme, only a set of nonzero coefficients quantized in different parts of macroblocks is chosen for inserting watermark. The experiment results show the proposed scheme can achieve excellent robustness against some common attacks, the proposed scheme is secure and efficient for video content DRM protection.
机译：它对于视频版权保护越来越重要，有必要为视频数字版权管理（DRM）提供有效的H.264压缩域水印。提出了一种基于H.264压缩域的水印数字版权管理新方法，该方法采用压缩比特流的语法元素进行嵌入和提取。这样，在嵌入和提取过程中都不需要完整的解码。基于对时间和空间的分析，选择一些合适的子块来嵌入水印，从而提高水印的鲁棒性，同时减少视觉质量的下降。为了避免比特率增加并增强所提出的视频水印方案的安全性，仅选择在宏块的不同部分中量化的一组非零系数来插入水印。实验结果表明，该方案能够很好地抵抗某些常见攻击，对于视频内容DRM保护是安全有效的。

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